JPH0978501A - Crosstie - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of uneven settlement between the front and rear crossties by arranging grooves on the upper face of the crosstie having the prescribed width, installing cables in them, and allowing an automatic ballast filling machine to be used. SOLUTION: The width size 25 of this crosstie 12 is set to about 250mm like the normal cross tie to obtain the bearing area required to support the load from a vehicle. The width size 26 required to install fastening devices 16 is 165mm, and the difference between the width sizes 25, 26 is utilized to arrange grooves 21. A pair of grooves 21, 21 in the length direction of the crosstie 12 are arranged on the upper face of the crosstie 12 at both side portions in the width direction of the crosstie 12 across the fastening devices 16. Edge sections 22, 22 are formed at both ends along the width direction of the crosstie 12 respectively to arrange the grooves 21, 21. Cables 23, 23 crossing a roadway are stored in the grooves 21, 21, and an automatic ballast filling machine can be used like for other crossties.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to sleepers.

[0002]

2. Description of the Related Art In railway facilities, cables for signals and the like are sometimes arranged across tracks. FIG. 3 shows such an example, and a line 3 is constructed by fastening a pair of rails 1 to a plurality of sleepers 2. Reference numeral 4 denotes a cable, which is arranged across the line 3.

In order to carry out this traverse with the cable 4 protected, a rail 1 is conventionally used, for example, as shown in FIG.
It is known that a concrete U-shaped groove 6 that crosses the line 3 is laid between the sleeper 2 supporting the railcar 2 and the cable 4 is passed through the U-shaped groove 6. There is.

Further, conventionally, as shown in FIG. 5, by forming a lowered step portion 7 on both sides of the upper surface of the wide sleeper 2 over the entire length and placing the cable 4 on the step portion 7,
The cable 4 is configured to cross the line 3. The stepped portion 7 is covered with an iron plate 8 extending in the width direction of the sleeper 2, whereby a sleeper dedicated to crossing the cable is configured.

[0005]

However, in the case of using the U-shaped groove 6 as shown in FIG. 4, since the U-shaped groove 6 is arranged between the sleepers 2, 2 as described above, There is a problem in that an automatic ballast filling machine that is operated on the assumption that no major obstacle exists between the sleepers cannot be used.

Further, as shown in FIG. 5, when the wide sleeper 2 having the step portion 7 is used, the construction cost of the sleeper is high due to its structure, and the width of the sleeper is too wide. There are problems such as causing uneven settlement with sleepers.

In view of the above, the present invention solves such a problem so that it can be used for crossing a cable, and an automatic ballast filling machine can be used like other sleepers.
Moreover, the purpose is to prevent uneven settlement between the front and rear sleepers.

[0008]

In order to achieve this object, the present invention has a groove for laying a cable formed on the upper surface thereof.

With such a construction, since the cable can be laid by forming a groove on the upper surface of the sleeper having a predetermined width, it is possible to use the ballast automatic filling machine like other sleepers. It is possible and does not cause uneven settlement between the front and rear sleepers.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 and FIG.
Is a pair of rails forming a railroad track, and 12 is a sleeper according to the present invention. Sleeper 12 is formed by casting such as ductile cast iron, and further by being formed in a hollow box shape with an open bottom, has an upper wall 13, a pair of side walls 14, and both end walls 15. It is formed with the outer dimensions corresponding to a normal sleeper. Also, the side wall 14 and both end walls 15
The sleeper 12 is formed in a skirt-expanded shape by having a slope. On the upper surface of sleeper 12,
A fastening device 16 for fastening the rail 11 is provided. In this fastening portion, an elastic pad 17 is laid between the rail 11 and the sleeper 12.

A pair of grooves 21, 21 are formed on the upper surface of the sleeper 12 in the length direction of the sleeper 12. These grooves 21, 21 are formed on both sides of the sleeper 12 in the width direction so as to sandwich the fastening device 16 therebetween. Edge portions 22, 22 for forming the grooves 21, 21 are formed at positions of both ends of the sleeper 12 along the width direction, respectively. In the grooves 21 and 21, cables 23 and 23 that traverse the railroad track are housed.

According to such a construction, the sleeper 12 is formed to have an outer size corresponding to a normal sleeper, that is, the width dimension 25 of the sleeper is the same as that of the normal sleeper.
Since it is formed to have a thickness of about 260 mm, it is possible to use an automatic ballast filling machine like other sleepers. Further, since the width dimension 25 is the same as that of the other sleepers, uneven settlement between the front and rear sleepers does not occur due to the load from the vehicle. Moreover,
Since the groove 21 is formed, the cable 23 can cross the line reliably and easily in a protected state. In addition, it can be laid structurally at low cost.

The width dimension 25 of the sleeper 12 is set to obtain a bearing area required to support the load from the vehicle. On the other hand, the width dimension 26 required to install the fastening device 16
Is actually about 160 to 170 mm, and these width dimensions
The groove 21 is formed by utilizing the difference between 25 and 26. The groove
23 may have a configuration in which one pair is provided as described above, or may have a configuration in which one or more are provided within the range of the above dimensional difference.

Since the edge portion 22 is formed, the cable 23 will not fall out of the groove. In addition, since the sleeper 12 is formed by casting as described above, the groove 21
The edge portion 22 can be easily formed. The groove 21 may be covered with the cable 23 and then covered.

[0015]

As described above, according to the present invention, since a cable can be laid by forming a groove on the upper surface of a sleeper having a predetermined width, an automatic ballast filling machine can be provided like other sleepers. It can be used and it is possible to prevent the occurrence of unequal settlement between the front and rear sleepers.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a sleeper of the present invention.

2 is a cross-sectional view of the sleeper of FIG.

FIG. 3 is a diagram illustrating a situation where a cable is laid across a line.

FIG. 4 is a diagram showing an example of a conventional structure for passing a cable across a line.

FIG. 5 is a diagram showing another example of a conventional structure for passing a cable across a line.

[Explanation of symbols]

 11 Rail 12 Sleeper 21 Groove 23 Cable

Claims (1)

[Claims] 1. A sleeper having a groove for laying a cable formed on an upper surface thereof.